55230400 has 42 divisors (see below), whose sum is σ = 135905240. Its totient is φ = 22091520.

The previous prime is 55230389. The next prime is 55230419. The reversal of 55230400 is 403255.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15660 + ... + 18859.

Almost surely, 2^55230400 is an apocalyptic number.

55230400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55230400 is an abundant number, since it is smaller than the sum of its proper divisors (80674840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55230400 is a wasteful number, since it uses less digits than its factorization.

55230400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34541 (or 34526 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 55230400 is about 7431.7158180329. The cubic root of 55230400 is about 380.8255367381.

Adding to 55230400 its reverse (403255), we get a palindrome (55633655).

The spelling of 55230400 in words is "fifty-five million, two hundred thirty thousand, four hundred".